WARNING: CPU: 1 PID: 3539 at arch/x86/mm/pat/memtype.c:1099 untrack_pfn+0x5df/0x730 Modules linked in: CPU: 1 PID: 3539 Comm: syz-executor282 Not tainted 5.18.0-syzkaller-16253-g2f3064574275 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:untrack_pfn+0x5df/0x730 arch/x86/mm/pat/memtype.c:1099 Code: 90 0c 00 00 31 ff 89 c6 e8 5e 84 5f 00 85 db 74 0b f7 d3 44 21 fb 0f 84 b1 00 00 00 45 85 ff 0f 84 b9 00 00 00 e8 91 80 5f 00 <0f> 0b 65 48 8b 04 25 28 00 00 00 48 3b 45 d0 0f 85 35 01 00 00 48 ===================================================== BUG: KMSAN: uninit-value in number+0xde7/0x2410 lib/vsprintf.c:495 number+0xde7/0x2410 lib/vsprintf.c:495 vsnprintf+0x1de2/0x3460 lib/vsprintf.c:2872 vprintk_store+0x52e/0x2110 kernel/printk/printk.c:2158 vprintk_emit+0x276/0xa70 kernel/printk/printk.c:2256 vprintk_default+0x8a/0xa0 kernel/printk/printk.c:2283 vprintk+0x163/0x180 kernel/printk/printk_safe.c:50 _printk+0x191/0x1d3 kernel/printk/printk.c:2293 show_iret_regs+0x292/0x2f0 arch/x86/kernel/dumpstack.c:150 __show_regs+0x71/0x1040 arch/x86/kernel/process_64.c:74 show_regs+0xc0/0x160 arch/x86/kernel/dumpstack.c:463 __warn+0x3c2/0x730 kernel/panic.c:596 report_bug+0x8eb/0xae0 lib/bug.c:199 handle_bug+0x41/0x70 arch/x86/kernel/traps.c:315 exc_invalid_op+0x1b/0x50 arch/x86/kernel/traps.c:335 asm_exc_invalid_op+0x12/0x20 untrack_pfn+0x5df/0x730 unmap_single_vma+0x52c/0x6d0 mm/memory.c:1593 unmap_vmas+0x402/0x5b0 mm/memory.c:1646 exit_mmap+0x250/0x900 mm/mmap.c:3140 __mmput+0x1bd/0x6c0 kernel/fork.c:1186 mmput kernel/fork.c:1207 [inline] dup_mm+0x32b/0x6d0 kernel/fork.c:1539 copy_mm+0x1c8/0x370 kernel/fork.c:1575 copy_process+0x2a10/0x68e0 kernel/fork.c:2236 kernel_clone+0x4c4/0x1110 kernel/fork.c:2641 __do_sys_clone kernel/fork.c:2758 [inline] __se_sys_clone kernel/fork.c:2742 [inline] __x64_sys_clone+0x29e/0x420 kernel/fork.c:2742 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae Local variable digest created at: fscrypt_match_name+0xb6/0x480 fs/crypto/fname.c:510 ext4_match+0x338/0xab0 fs/ext4/namei.c:1453 CPU: 1 PID: 3539 Comm: syz-executor282 Not tainted 5.18.0-syzkaller-16253-g2f3064574275 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 =====================================================